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刘家峡水电站厂房共装五台混流式水轮发电机组,单机容量分别为22.5万千瓦、25万千瓦和30万千瓦.机组由直径为7米的压力钢管引水发电,蜗壳进口处直径为6.5米.金属蜗壳的包角为345°,最大平面尺寸约为18.4米(见图1).蜗壳采用全埋式的圆断面金属蜗壳,不考虑与外围混凝土的联合作用,全部内水压力由金属蜗壳本身承受,蜗壳外围混凝土则承受由机墩传下的荷载,蜗壳左右侧分别留有厚约1.3米的二期混凝土,故坝后厂房的机组间距定为21米.
Liujiaxia Hydropower Station plant co-installed five Francis turbine units, stand-alone capacity of 225,000 kilowatts, 250,000 kilowatts and 300,000 kilowatts. The unit from the diameter of 7 meters of pressure pipe water diversion power generation, volute diameter of 6.5 meters The wrap angle of the metal volute is 345 ° and the maximum plane size is about 18.4 meters (see Fig. 1). The volute adopts fully buried circular section metal volute, irrespective of the joint action with the surrounding concrete, The volute itself is supported by the volute itself. The outer concrete of the volute is subjected to the load transmitted by the pier. The left and right sides of the volute are respectively left with the second phase concrete with a thickness of about 1.3 meters. Therefore, the spacing of the units behind the dam is set at 21 meters.